UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Un76vOZltlSKbIoOA47mHbDlqQ2F3I11MydiY8jh94M=' 
WHERE 
  key_id = '56d912055b4964b543bddce5aff738795f1e788bd2c59d58567aa551e20a8707' 
  AND (
    token = 'Un76vOZltlSKbIoOA47mHbDlqQ2F3I11MydiY8jh94M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )